Search for associated production of a Z boson with an invisibly decaying Higgs boson or dark matter candidates at s=13 TeV with the ATLAS detector

The ATLAS collaboration

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Abstract

A search for invisible decays of the Higgs boson as well as searches for dark matter candidates, produced together with a leptonically decaying Z boson, are presented. The analysis is performed using proton−proton collisions at a centre-of-mass energy of 13 TeV, delivered by the LHC, corresponding to an integrated luminosity of 139 fb−1 and recorded by the ATLAS experiment. Assuming Standard Model cross-sections for ZH production, the observed (expected) upper limit on the branching ratio of the Higgs boson to invisible particles is found to be 19% (19%) at the 95% confidence level. Exclusion limits are also set for simplified dark matter models and two-Higgs-doublet models with an additional pseudoscalar mediator.

Original languageEnglish
Article number137066
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume829
DOIs
StatePublished - 10 Jun 2022

Funding

FundersFunder number
ANID
BSF-NSF
CEA-DRF
Canton of Bern and Canton of Geneva
DNSRCIN2P3-CNRS
EU-ESF
G?ran Gustafssons Stiftelse
GIF , Israel
GIF, Israel
GenT Programmes Generalitat Valenciana , Spain
GenT Programmes Generalitat Valenciana, Spain
GridKA
INFN-CNAF
IRFU
La Caixa Banking Foundation
MES of Russia
MESTD
MIZŠ
MSSR
Marie Sk?odowska
NDGFCC-IN2P3
Norwegian Financial Mechanism2014-2021
PROMETEO
RGC
Wallenberg Foundation
National Science Foundation
U.S. Department of Energy
Alexander von Humboldt-Stiftung
Arkansas Space Grant Consortium
Brookhaven National Laboratory
Karlsruhe Institute of Technology
Disability Rights Fund
H2020 Marie Skłodowska-Curie Actions
Arizona-Nevada Academy of Science
CERN
Göran Gustafssons Stiftelser
Natural Sciences and Engineering Research Council of Canada
National Research Council Canada
Canada Foundation for Innovation
Science and Technology Facilities Council
Leverhulme Trust
Royal Society
European Research Council
European Cooperation in Science and Technology
Australian Research Council
Neurosurgical Research Foundation
Singapore Eye Research Institute
Helmholtz-Gemeinschaft
Deutsche Forschungsgemeinschaft
Agence Nationale de la Recherche
Japan Society for the Promotion of Science
Ministry of Education, Culture, Sports, Science and Technology
Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung
Danmarks Grundforskningsfond
Fundação de Amparo à Pesquisa do Estado de São Paulo
National Natural Science Foundation of China
Ministerstvo Školství, Mládeže a Tělovýchovy
Fundação para a Ciência e a Tecnologia
Bundesministerium für Bildung und Forschung
Chinese Academy of Sciences
Austrian Science Fund
Generalitat de Catalunya
Agencia Nacional de Promoción Científica y Tecnológica
Nederlandse Organisatie voor Wetenschappelijk Onderzoek
Bundesministerium für Wissenschaft, Forschung und Wirtschaft
Conselho Nacional de Desenvolvimento Científico e Tecnológico
Joint Institute for Nuclear Research
Nella and Leon Benoziyo Center for Neurological Diseases, Weizmann Institute of Science
Israel Science Foundation
Instituto Nazionale di Fisica Nucleare
Narodowe Centrum Nauki
Javna Agencija za Raziskovalno Dejavnost RS
Ministry of Science and Technology, Taiwan
Centre National de la Recherche Scientifique
Ministerio de Ciencia e Innovación
Centre National pour la Recherche Scientifique et Technique
Commissariat à l'Énergie Atomique et aux Énergies Alternatives
Horizon 2020
British Columbia Knowledge Development Fund
European Regional Development Fund
Defence Science Institute
Council on grants of the President of the Russian Federation
Institut National de Physique Nucléaire et de Physique des Particules
National Research Center "Kurchatov Institute"
Narodowa Agencja Wymiany Akademickiej

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